Boonville Where protection is required ordinance (§ 21-42.26)

(a) An approved backflow prevention assembly shall be installed on each service line to a consumer's water system serving premises where, in the judgment of the director of public works or the state department of natural resources, actual or potential hazards to the public potable water system exist. The type and degree of protection required shall be commensurate with the degree of hazard.

(b) An approved air gap separation or reduced pressure principle backflow prevention assembly shall be installed at the service connection or within any premises where, in the judgment of the director of public works or authorized representative or the state department of natural resources, the nature and extent of activities on the premises, would present an immediate and dangerous hazard to health should a cross-connection occur, even though such crossconnection may not exist at the time the backflow prevention assembly is required to be installed. This includes but is not limited to the following situations:

(1) Premises having an auxiliary water supply, unless the quality of the auxiliary supply is acceptable to the director of public works and the state department of natural resources.

(2) Premises having internal cross-connections that are not correctable, or intricate plumbing arrangements which make it impractical to ascertain whether or not cross-connections exist.

(3) Premises where entry is restricted so that inspection for cross-connections cannot be made with sufficient frequency or at sufficiently short notice to assure the crossconnections do not exist.

(4) Premises having a repeated history of crossconnections being established or re-established.

(5) Premises, which due to the nature of the enterprise therein, are subject to recurring modification or expansion.

(6) Premises on which any substance is handled under pressure so as to permit entry into the public water supply, or where a cross-connection could reasonably be expected to occur. This shall include the handling of process waters and cooling waters. (7) Premises where materials of a toxic or hazardous nature are handled such that if back siphonage or back pressure should occur a serious health hazard may result.

(c) The types of facilities listed below fall into one or more of the categories of premises where an approved air gap separation or reduced pressure principle backflow prevention assembly is required by the director of public works and/or the state department of natural resources to protect the public water supply and must be installed at these facilities unless all hazardous or potentially hazardous conditions have been eliminated or corrected by other methods to the satisfaction of the director of public works or the state department of natural resources. Types of Facilities Representing Cross-Connection Hazards

(1) Aircraft and missile manufacturing plants;

(2) Automotive plants including those plants which manufacture motorcycles, automobiles, trucks, recreational vehicles and construction and agricultural equipment;

(3) Potable water dispensing stations which are served by a public water system;

(4) Beverage bottling plants including dairies and breweries;

(5) Canneries, packing houses and reduction plants;

(6) Car washes;

(7) Chemical, biological and radiological laboratories including those in high schools, trade schools, colleges, universities and research institutions;

(8) Hospitals, clinics, medical buildings, autopsy facilities, morgues, mortuaries and other medical facilities;

(9) Metal or plastic manufacturing, fabrication, cleaning, plating or processing facilities; (10) Plants manufacturing paper and paper products;

(11) Plants manufacturing, refining, compounding or processing fertilizer, film, herbicides, natural or synthetic rubber, pesticides, petroleum or petroleum products, pharmaceuticals, radiological materials or any chemical which would be a contaminant to the public water system;

(12) Commercial facilities that use herbicides, pesticides, fertilizers or any chemical which would be a contaminant to the public water system;

(13) Plants processing, blending or refining animal, vegetable or mineral oils;

(14) Commercial laundries and dye works;

(15) Sanitary sewer, storm water and industrial waste treatment plants and pumping stations;

(16) Waterfront facilities including piers, docks, marinas and shipyards;

(17) Industrial facilities which recycle water;

(18) Restricted or classified facilities or other facilities closed to the supplier of water or the state department of natural resources;

(19) Fire sprinkler systems using any chemical additives;

(20) Auxiliary water systems;

(21) Irrigation systems with facilities for injection of pesticides, herbicides or other chemicals or with provisions for creating back pressure;

(22) Portable tanks for transporting water taken from a public water system;

(23) Facilities which have pumped or repressurized cooling or heating systems that are served by a public water system, including all boiler systems.